https://support.sharkninja.se/sfsites/c/resource/SN_hreflangManager?0161830b64

1(function () {
2
3    // Add the country domain mapping here 
4    const countryDomainMapping = {  
5                                    com :   "us", 
6                                    ca  :   "ca",
7                                    mx  :   "mx",
8                                    uk  :   "gb",
9                                    pl :  "pl",
10                                    dk :  "dk",
11                                    fr:  "fr",
12                                    it:  "it",
13                                    es:  "es",
14                                    se:  "se",
15                                    be:  "be",
16                                    de:  "de",
17                                    nl:  "nl",
18                                    no:  "no"
19                                 };
20
21
22    let retryFlag = true;
23    const hostname = window.location.hostname; // e.g. support.sharkninja.ca
24    const parts = hostname.split('.');
25    const tld = parts[parts.length - 1];
26    function onUrlChange() {
27        if (document.querySelector("link[hreflang]") != null) {
28            document.querySelectorAll("link[hreflang]").forEach((item) => {
29                
30                const langCode = item.hreflang.split('-')[1];
31                letIsRemoved = false;
32                if (tld == 'com' && (langCode != 'us' && langCode != 'default')) {
33                    item.remove();
34                    retryFlag = false;
35                    letIsRemoved = true;
36                }
37                else if (tld != 'com' && countryDomainMapping[tld] &&  countryDomainMapping[tld] != langCode) {
38                    item.remove();
39                    retryFlag = false;
40                    letIsRemoved = true;
41                }
42
43                if(!letIsRemoved && tld != getCanonicalDomain(item.href)){
44                    let domainName = getCanonicalDomain(item.href);
45                    item.href = item.href.replace(`.${domainName}/`, `.${tld}/`);
46                }
47            })
48        }
49        if (document.querySelector("link[rel='canonical']") != null) {
50            document.querySelectorAll("link[rel='canonical']").forEach((item) => {
51                let domainName = getCanonicalDomain(item.href);
52                if(tld != domainName){
53                    item.href = item.href.replace(`.${domainName}/`, `.${tld}/`);
54                }
55            })
56        }
57        if (retryFlag) {
58            retryFlag = false;
59            setTimeout(() => onUrlChange(), 100);
60        }
61
62    }
63
64    function getCanonicalDomain(url){
65        const u = new URL(url);
66        const hostname = u.hostname;              // e.g. "support.sharkninja.ca"
67        const parts = hostname.split('.');
68        return parts.length ? parts.slice(-1)[0] : '';
69    }
70    // Listen for back/forward navigation
71    window.addEventListener('popstate', function () {
72        retryFlag = true;
73        onUrlChange();
74    });
75
76    // Monkey patch pushState & replaceState
77    const pushState = history.pushState;
78    const replaceState = history.replaceState;
79
80    history.pushState = function () {
81        pushState.apply(history, arguments);
82        retryFlag = true;
83        onUrlChange();
84    };
85
86    history.replaceState = function () {
87        replaceState.apply(history, arguments);
88        retryFlag = true;
89        onUrlChange();
90    };
91    window.addEventListener("load", onUrlChange);
92})();